Apparatus for arresting gold and other precious material.



D. GUILFORD.

APPARATUS FOR ARRESTING GOLD AND OTHER PRECIOUS MATERIAL.

APPLICATION FILED NOV. 8, 1911.

1 ,088,4 1 6. Patented Feb. 24, 1914.

' WITNESSES COLUMBIA PLANOGRAPH c0.. WASHIN DDDDDDD c UNITED STATES PATENT ()FFICE.

DUDLEY GUILFORD, OF LANSDOWNE, PENNSYLVANIA.

APPARATUS FOR ARRESTING GOLD AND OTHER PRECIOUS MATERIAL.

To all whom it may concern Be it known that I, DUDLEY GUILFORD, a citizen of the United States, residing at Lansdowne, county of Delaware, State of Pennsylvania, have invented a new and useful Apparatus for Arresting Gold and other Precious Material, of which the following is a specification.

In dentistry as heretofore practised, considerable loss has arisen owing to particles of gold and other precious material passing into the dental cuspidor, and since no means are provided for recovering a material amount of such gold and precious material the same passes from the waste-pipe leading from the dental cuspidor, and is thus lost.

It is the purpose of my present invention to devise a novel construction of an apparatus for arresting particles of gold and other precious material, which ordinarily cannot be recovered, and, with the above inview, my invention consists of a novel construction of an apparatus for arresting particles of gold and other precious material, which is adapted to be connected with the waste-pipe of a dental cuspidor.

It further consists of a novel construction of an apparatus in which the fluid is led tangentially into an enlarged chamber so that the flow through such chamber will be comparatively slow, and then discharged from such chamber through a discharge port located preferably centrally in the top thereof, provision being made for trapping the gold or other particles of precious material which, owing to the manner in which the liquid is led into the large chamber, are projected by centrifugal force toward the walls of the chamber and thence deposited by gravity to the bottom thereof, so that the same will be held by means of a novel construction of a trap.

It further consists of a novel construction of an apparatus for arresting particles of gold and the like, which consists of an outer casing, a removable pan therein, a novel construction of a baflie therein, an inlet conduit discharging tangentially into the chamber, and a novel construction of a cover having a discharge passage therethrough and communicating with said chamber substantially centrally thereof.

Specification of Letters Patent.

Application filed November 8, 1911.

Patented Feb. 24, 1914:.

Serial No. 659,136.

It further consists of other novel features of construction, all as will be hereinafter fully set forth.

For the purpose of illustrating my invention, I have shown in the accompanying drawing one form thereof which is at present preferred by me, since the same has been found in practice to give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of these instrumentalities as herein shown and described.

Figure 1 represents a top plan view of an apparatus for arresting particles of gold and the like embodying my invention, the cover having been removed for the sake of clear ness of illustration. Fig. 2 represents a sectional elevation of Fig. 1, but showing the cover in place.

Similar numerals of reference indicate corresponding parts in the figures.

Referring to the drawings :1 designates the casing'of an apparatus for arresting particles of gold and other precious material embodying my invention, the same being preferably formed of an integral piece of material and provided with an enlarged chamber 2, the walls of which are preferably cylindrical. In the bottom of the chamber 2 is located a removable pan 3 adapted to receive a novel construction of a trap which in the present instance consists of a plate having an imperforate portion 4, centrally located, said plate being cutthrough to the outer periphery at a number of places to form strips which are bent upon themselves to form baffies 5 which preferably incline toward the inlet passage 6, which latter opens into the chamber 2 tan gentially to the walls thereof, it being noted that the passage 6 is formed by a conduit 7 to which is adapted to be connected in any desired manner the waste-pipe of a dental cuspidor, although, as will be apparent, the same may be connected, if desired, to any other suitable source of liquid supply in which the gold or other material is carried and which it is desired to separate.

8 designates a cover which is angularly recessed near its periphery as indicated at 9 in order to adapt the same to seat on the upper end of the casing 1.

1O designates fastening devices which secure the cover 8 to the casing 1, said fastening devices in the present instance passing through the cover 8 and having threaded engagement with the upper end of the casing 1, which is preferably enlarged at such point.

11 designates the discharge outlet from the chamber 2, preferably located centrally thereof, said discharge outlet communicating with the passage 12 extending through the cover 8 to the conduit 13 formed thereby, which latter is adapted to be connected with any desired type of conduit in order that the liquid passing from the chamber 2 may be led to any desired point of utilization or discharge.

The operation of my novel device will noW be readily apparent to those skilled in the art to which this invention appertains, and is as follows :The conduit 7 is connected with the source of supply in which the gold or other material is in suspension, and as hereinbefore stated, it is especially designed to be connected with the waste-pipe leading from a dental cuspidor. The liquid, such as for example, the water passing from the dental cuspidor and which is continuously running, discharges into the chamber 2 tangentially to the walls thereof, whereby there is imparted to such water a whirling or centrifugal motion, the result of which is that the heavy particles contained within the water are forced by the centrifugal action to the walls of the chamber 2, and thence owing to the slow current through the chamber 2, such heavy particles of gold or other material fall to the bottom thereof, and are trapped by the blades or bafiles 5, which are preferably inclined toward the flow of the water.

It will be understood that the chamber 2 is filled with water and the lighter particles naturally tend to gravitate toward the center while the heavy particles fall to the bottom thereof and are trapped. The flow from the chamber 2 is centrally through the discharge port 11 at the top thereof, thence through the passage 12 to a desired point of discharge. 7

Although, I have shown in the present in stance a preferred form of trap or gold arresting device, it will be apparent in the broad scope of my invention any desired type of baffles or riflles may be employed in order to trap the gold or other precious material and prevent the same from being car: ried up to the discharge outlet 11. lVhen it is desired to remove the gold and other precious material which has been recovered, the fastening devices 10 are loosened, whereupon the cover 8 may be removed and then the pan 3 together with the trap contained therein.

It will be understood that the trap consisting of the imperforate plate 4; and the baffles 5 is stationary within the pan 3, so that the battles serve to arrest the rapidity of the flow of the liquid through the chamberQ.

Special attention is directed to the fact that in my device I admit the liquid containing the gold or other mate-rial in suspension into the chamber in such a manner that a rotary motion is imparted thereto in order that the centrifugal force will cause the particles contained within the water to be projected toward the periphery of the chamber and the flow of the water within the chamber is inwardly and upwardly and is discharged from the chamber centrally thereof.

It will now be apparent that I have devised a novel and useful construction of an apparatus for arresting gold and other precious material, which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and while I have, in the present instance, shown and described a preferred embodiment thereof which has been found in practice to give satisfactory and reliable results, it is to be understood that the same is susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantages.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is

1. In a device of the character stated, a casing having a chamber therein, and an inlet at its lower portion, a stationary trap in the lower portion of said chamber and comprising a plate having a central flattened portion, and inclined battles projecting therefrom, said inlet discharging in proximity to said baflies, a closure for the top of said chamber, and an outlet pipe for said closure.

2. In a device of the character stated, a casing having a chamber therein, and an inlet at its lower portion, a trap in the lower portion of said chamber having a central imperforate portion and radial bafiles projecting from said central portion and inclined toward the current from said inlet opening, the latter discharging tangentially into the lower portion of said chamber against said baiiies, and means for discharging liquid from said chamber at the central upper end thereof.

3. In a device of the character stated, a

casing comprising a bottom wall and a vertical wall and a removable top which forms an unrestricted chamber within said casing hroughout its internal diameter, a pan located in the lower portion of said chamber,

a stationary trap supported in said pan and having a central, imperit'orate portion, the outer portion of said trap having baffles radiating therefrom, the lower portion of said chamber having an inlet discharging in proximity to said battles, a removable closure for said chamber, said closure having a discharge outlet leading from substantially the central portion of said closure.

4. In a device of the character stated, a casing having a chamber therein, an imperforate bottom for said chamber, a pan in the bottom of said chamber, a stationary trap carried by said pan and consisting of a central flattened portion and inclined baliles extending therefrom, and of greatest width at their outer ends, said trap and pan being removable in unison, a conduit discharging into the lower portion of said chamber, above said trap and tangential with the walls of said chamber, a closure in the top of said chamber, and a discharge conduit communicating with said casing at substantially the central portion of said closure.

5. In a device of the character stated, a casing having a chamber therein and an inlet leading thereinto, an imperforate bottom for said chamber, a removable pan supported upon said bottom, a removable trap carried by said pan and comprising a plate having a central imperiorate portion and outwardly extending ballles inclined toward the current from said inlet passage, the latter discharging into the lower portion of said chamber above said trap on a line tangential to the walls of said chamber, a closure in the top of said chamber, and a discharge conduit leading from said closure, at substantially the central portion thereof.

6. In a device of the character stated, a casing having a chamber and an inlet discharging tangentially thereinto, apan at the bottom of said chamber and below said inlet, a stationary trap in said pan and consisting of a central flattened portion and baflies extending therefrom, the width of a battle at one end being different from the width of a baille at the opposite end, and a cover for said casing having a discharge passage communicating centrally with said chamber.

DUDLEY GUILFORD. lVitnesses H. S. FAIRBANKS, C. D. MoVAY.

topics of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. 0. 

